Patent GB-190415700-A (GB)
Title: Improvements in Cash Registers.
Filed: 1904-07-14
Granted: 1904-10-27
Abstract: 15,700. National Cash Register Co., [National Cash Register Co.]. July 14. Receipts, checking and recording.-Modifications are described in key-set key-operated cash registers of the type set forth in Specification No. 10,213, A. D. 1893, for the purpose of setting printing-wheels by levers operated by the amount keys and clerks' key-levers and preventing overthrow of the same, ensuring full-stroke of the clerks' keys and unlocking the operating-lever upon the couplerspindle by their movement and preventing depression of more than one of the clerks' keys, and finally aligning, inking, and forcing platens against the inking-wheels for the purpose of recording upon the detail strip always, and upon a check at will, according to the position of a check key. Depression of a key 2, Fig. 3, forces down the corresponding lever 7, until the roller 5 slips down the forward edge of the lever, and the pendent arm 14 passing down its rear prevents an overthrow, the angular stroke of the lever being determined by the length of its operating-edge 6, and the camnose 13 co-operating with the arm to return the lever with the key. Nested sleeves 10. 12 and the shaft 8 transmit motion to the proper lever 15, Fig. 2, which is pivoted at the upper end to an operating-lack 16 constrained to move between the fixed bar 16<a> and its corresponding pinion 17, thereby transmitting motion through another set of nested sleeves to the duplicate type-bearing printing-wheels 20 adapted to print on the check above and on the detail strip below. Concentrically mounted with these is a printing-wheel for the clerks' keys, operated by similar means but with the operating-rack 23 below the pinion. The grooved bar 29<a> into which the clerks' key-levers descend when operated contains sufficient balls to prevent depression of more than one at a time, and any one of these keys will also operate the bent lever 47, 50 and force in the rod 51 with wedge-shaped forward end, and thereby rock the lever 44 transversely and withdraw the locking-pin 43 from above the operating-lever 39 on the coupler spindle 41. Printing takes place between the setting of the keys and their release, and the linkwork 55, 59, 60, 63, 64 so co-operates with the pin 53 on the lever, the fixed pin 62, the fixed slot 58 for the pin 57, and the other parts shown that the pivoted platen-levers 65, 66 may first be rotated to bring the platens down upon the inking-pads and force them upon the types, and secondly, after a short return, to make the printing-stroke. Figs. 7 and 11 show the means for rendering the upper platen effective when the check key 4 is depressed and the linkwork 84, 83, 82 is operated to swing the detent rod 81 out from under the platen 69. Simultaneously, the link 86 moves the bar 76 along the slot 75 from the position of Fig. 7. so that the platen-bearing end 72 of the lever 65, which is pivoted at 73, becomes locked to the lever, and the platen descends in one piece with it. These parts are further controlled by the spring 77 and the pin and slot 78, 79. The depression of the check key also throws the pawl arm 91 into gear with the ratchet-wheel 89, so that the operating-lever will rotate this wheel, throw the locking-pawl 87 out of engagement with the check key, and lift the detent arm 94, whereupon the spring motor 101 drives the pinion 99 through half a revolution, when the arm again locks it. This motion is transmitted by gearing 100, 105, Fig. 6, to the check-feed roller 106, the check passing between this and the companion roller before it is cut by the stationary and movable knives 120, 118. The movable knife 118 is attached to a transverse block 119, moving in guides and pressed upwards by springs unless forced down by the cam 123 on the spindle 98. In the elevated position of the check key, the pawl 91 does not gear with the ratchetwheel. The detail strip passes from the roller 109 over bars 111, 112 to the feed-roller 113 operated from the main lever through the ratchet rack and wheel 115, 114. The inking-pads 126, Fig. 8, are upon spring arms 124, 125 drawn together by the spring 128, and are normally in contact with supply felts 129 mounted on the reservoir 130. As the pin 144 on the main lever passes up the face 142, it rocks the lever 133 and slides the spring arms rearwards under the guidance of pins and slots 131, 132, but, upon reaching the face 143, the parts are returned, and the pin afterwards descends a slot 141 in the hinged foot of the lever. Full-stroke of the clerks' keys is ensured by the knife-edges 33 and rack 34, which is only depressed to allow return of the key by the movement of the main lever, when the pin 37 rotates the ratchet-wheel 35 and with it a toothed wheel 40 which returns the key.